Patents
Sitemap › G03 - Photography; Cinematography; Analogous techniques using waves other than optical waves; Electrography; Holography › G03B - Apparatus or arrangements for taking photographs or for projecting or viewing them; Apparatus or arrangements employing analogous techniques using waves other than optical waves; Accessories therefor › G03B 21 - Projectors or projection-type viewers; Accessories therefor
Patents for G03B 21 - Projectors or projection-type viewers; Accessories therefor (41,465)
09/1982
09/14/1982US4349163 Coreless roll film structure and apparatus for winding thereof
09/01/1982EP0058937A1 Projection lighting unit with glass reflector capable of dual insertion
08/1982
08/25/1982EP0058363A1 Overhead projector
08/10/1982US4343538 Projector
08/10/1982US4343106 Thin-piece holding structure and a slide filing sheet using that structure
08/03/1982US4342147 Method for loading pre-closed slide mounts
07/1982
07/27/1982US4341463 Image reproducing apparatus
07/27/1982US4341446 Microfiche reading carrel
07/27/1982US4341128 Device for moving a slidable stage on a two-dimensional plane
07/21/1982EP0056307A2 Optical focus adjustment means for projection television apparatus
07/20/1982US4340275 Rear projection screen with patterned lenticular prismatic structure
07/20/1982US4340198 Stand for a projection screen
07/19/1982EP0050155A4 Optical rollfiche reader.
07/13/1982US4339183 Film reader
07/13/1982US4339182 Control systems for microfilm readers
07/13/1982US4339181 Lens arrangements for microfiche reader assembly and method
07/13/1982US4339175 Projection screen
07/13/1982US4338738 Slide previewer and tray loader
07/13/1982EP0047306A4 An envelope for transparencies for overhead projectors and like projecting apparatus.
07/06/1982US4338519 Adjustable blip sensor interface for microfilm reader and microfilm reader printers
07/06/1982US4338165 Method of making a high-gain projection screen
07/06/1982US4338006 Overhead projector
06/1982
06/24/1982WO1982002098A1 Optical system for obtaining two compressed images by anamor phosis corrolated at the inter-ocular distance
06/23/1982EP0054492A1 Device for displaying information in an image
06/22/1982US4336483 Capacitive position sensor
06/22/1982CA1126065A1 Quick change lens system
06/16/1982EP0053782A1 A projection unit including a glass reflector
06/15/1982US4334743 Optical arrangement for use in a microfiche reader and method
06/15/1982US4334742 Microfiche reader assembly and method
06/15/1982US4334741 Melding mask
06/15/1982CA1125552A1 Image projection system
06/10/1982WO1982001943A1 Improvements relating to microfiche readers
06/08/1982US4333254 Multipurpose dental X-ray film mount arrangement
06/08/1982CA1125067A1 Motion picture projecting system
06/08/1982CA1125066A1 Extension platform to support transparencies for an overhead projector
06/02/1982EP0052938A1 Tabbed transparency
05/1982
05/26/1982EP0043834A4 Protective band for photosensitive film on spools.
05/25/1982US4331397 Front/rear projection system
05/25/1982CA1124220A1 High voltage movie light and incandescent lamp unit for use therewith
05/19/1982EP0051977A2 Rear projection apparatus
05/19/1982EP0051976A2 Optical refractor for diffusing light
05/18/1982US4330179 Variable magnification projection device
05/18/1982CA1123804A1 Movie light, low voltage incandescent lamp unit for use therewith, and reflector
05/11/1982US4329716 Combination television picture projection screen unit and ornamental cover unit therefor
05/11/1982US4329019 Three-dimensional image display apparatus and a screen therefor
05/11/1982CA1123241A1 Micro image cassette and viewer
05/05/1982EP0050761A2 Slide viewer
05/04/1982US4327974 Microform viewer
05/04/1982US4327968 Prism plates for compact optical viewers
05/04/1982CA1122836A1 Rotary film strip holding apparatus
04/1982
04/28/1982EP0050175A1 Projection apparatus for viewing microfilm cassettes
04/28/1982EP0050155A1 Optical rollfiche reader
04/20/1982US4325523 Film advancing arrangement
04/15/1982WO1982001259A1 Three-dimensional plural display apparatus
04/13/1982US4324484 Microfilm filing system
04/13/1982US4324465 Arrangement for adjusting components of photographic apparatus or the like
04/06/1982US4323301 Collapsible rear/front projection screen assembly
04/06/1982US4323201 Automatic film de-splicer and winder
03/1982
03/31/1982EP0048300A1 Endless-film cassette and apparatus for the photo-optical recording and/or reproducing of stills employing the endless-film cassette
03/30/1982US4322779 Photoflood light
03/30/1982US4322158 Thermal film development apparatus
03/24/1982EP0047965A2 Cinematographic reproduction apparatus with a facility for optically scanning a mark in the film margin
03/23/1982US4320943 Carriage support arrangement for a microfiche reader
03/23/1982CA1120296A2 Microfiche reader
03/18/1982WO1982000911A1 Real image projection device
03/17/1982EP0047632A1 Thermoset relief patterned sheet
03/17/1982EP0047495A2 Cinematographic apparatus
03/17/1982EP0047424A1 Slide
03/17/1982EP0047306A1 An envelope for transparencies for overhead projectors and like projecting apparatus.
03/16/1982US4320439 Compact lamp unit and socket
03/16/1982CA1119854A1 Head up visual display apparatus
03/16/1982CA1119853A1 Roll film reader/printer with manually insertable discrete film
03/10/1982EP0046916A1 Film feeding equipment, in particular projector
03/09/1982US4318589 Segmented curved screen construction for preserving a predefined curvature
03/02/1982US4317619 Microfiche apparatus
03/02/1982US4317618 Vibrating screen for image projection
03/02/1982US4317553 Projection screen stand
03/02/1982CA1119027A1 Multi-slide holder and editor and cabinet therefor
02/1982
02/16/1982EP0036882A4 Lens mounting system.
02/10/1982EP0045666A1 Holders for photographic slides
02/10/1982EP0045305A1 Segmented screen construction
02/09/1982US4314745 Microfilm reading device
02/09/1982US4314416 Diapositive frames
02/09/1982CA1118141A1 Translucent screen
02/02/1982US4313676 Method of automatically adjusting a picture reproducing apparatus
02/02/1982US4313675 Episcope
02/02/1982CA1117344A1 Marking of interspersed motion-picture scenes and still shots with interrupt-transport markings
02/02/1982CA1117332A1 Microfilm reader/printer with normally open and removable glass flats
01/1982
01/27/1982EP0044633A2 Overhead projector transparency mounting frame including adhesive means for the attachment of a transparency
01/26/1982US4312578 Microfilm reader
01/26/1982US4312568 Projection screen assembly
01/26/1982CA1116902A1 High-gain image projection screen
01/26/1982CA1116900A1 Multiple optics slide projector
01/20/1982EP0043834A1 Protective band for photosensitive film on spools.
01/19/1982US4311370 Film reader
01/19/1982CA1116447A1 Variable definition projection systems
01/19/1982CA1116445A1 Viewer for photographic prints
01/12/1982CA1116227A1 Controlled corona for charging electrostatic photocopy paper having zno binder layer
01/11/1982EP0035033A4 Sheeting useful as a projection screen.
01/07/1982WO1982000028A1 Two piece reel
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